9 条题解

  • 0
    @ 2024-2-25 19:33:09

    #include<cstdio> #define ll long long

    using namespace std; ll a[505][505],b[505][505]; const ll mod=1000000007; ll n,m,p;

    inline ll read(){ ll a=0,k=1; char c=getchar(); while (!('0'<=c&&c<='9')){ if (c=='-'){ k*=-1; } c=getchar(); } while ('0'<=c&&c<='9'){ a=a10+c-'0'; c=getchar(); } return ak; }

    int main(){ n=read(),p=read(),m=read(); for (ll i=1;i<=n;i++){ for (ll j=1;j<=p;j++){ a[i][j]=read(); } } for (ll i=1;i<=p;i++){ for (ll j=1;j<=m;j++){ b[i][j]=read(); } } for (ll i=1;i<=n;i++){ for (ll j=1;j<=m;j++){ ll tmp=0; for (ll k=1;k<=p;k++){ tmp=(tmp+(a[i][k]*b[k][j]+mod)%mod+mod)%mod; } printf("%lld ",tmp); } putchar('\n'); } return 0; }

    信息

    ID
    60
    时间
    2000ms
    内存
    256MiB
    难度
    3
    标签
    递交数
    637
    已通过
    161
    上传者